The CT scan goes into use in the United States. Lives will be saved. Originally known as a CAT scan — for computed (or computerized) axial tomography, or computer-aided (or assisted) tomography — the process uses a series of X-rays to create sequential images of virtual slices of body tissue.

1876: Alexander Graham Bell makes the first telephone call in his Boston laboratory, summoning his assistant, Thomas A. Watson, from the next room. The Scottish-born Bell had a lifelong interest in the nature of sound. He was born into a family of speech instructors, and his mother and his wife both had hearing impairments. While […]

2004: Some college dudes unveil a website only Harvard University people can use. Seven years later it is worth $50 billion, and for hundreds of millions of people the site now called Facebook is so integral to daily life that, for all intents and purposes, it is the internet. Trying to remember a time before […]